CVE-2026-66906Network attack vector

Arbitrary file overwrite via unnormalized blob names

Published Aug 24, 2026 · Updated Aug 24, 2026

Path traversal in Apache Camel Azure Storage Blob allows attackers to overwrite local files outside fileDir via crafted blob names. BlobOperations.downloadBlobToFile joined fileDir with each untrusted Azure blob name and downloaded to the result without normalization or a containment check. Exploitation requires control of a name in a consumed container and use of downloadBlobToFile; writes receive the Camel process's filesystem privileges.

CVSS severityUnavailable
Unscored
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Apache Camel Azure Storage Blob allows attackers to overwrite local files outside fileDir via crafted blob names. BlobOperations.downloadBlobToFile joined fileDir with each untrusted Azure blob name and downloaded to the result without normalization or a containment check. Exploitation requires control of a name in a consumed container and use of downloadBlobToFile; writes receive the Camel process's filesystem privileges.

The record

CVE
CVE-2026-66906
Published
Aug 24, 2026
Updated
Aug 24, 2026
Vendor
The Apache Software Foundation
Product
Apache Camel
Classifications
CWE-22
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.0.0 <4.14.9
  2. Affected versionversion=4.15.0 <4.18.4
  3. Affected versionversion=4.19.0 <4.22.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

The Apache Software Foundation · Apache Camelversion=4.0.0 <4.14.9; version=4.15.0 <4.18.4; version=4.19.0 <4.22.0

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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